Please use this identifier to cite or link to this item:
Title: Implications of mitotic and meiotic irregularities in common beans (Phaseolus Vulgaris L.)
Keywords: Incompatibility
Phaseolus vulgaris L.
Pollen viability
Issue Date: 23-May-2016
Publisher: Fundação de Pesquisas Científicas de Ribeirão Preto (FUNPEC-RP)
Citation: LIMA, D. C. et al. Implications of mitotic and meiotic irregularities in common beans (Phaseolus Vulgaris L.). Genetics and Molecular Research, Ribeirão Preto, v. 15, n. 2, 2016.
Abstract: The common bean has great social and economic importance in Brazil and is the subject of a high number of publications, especially in the fields of genetics and breeding. Breeding programs aim to increase grain yield; however, mitosis and meiosis represent under explored research areas that have a direct impact on grain yield. Therefore, the study of cell division could be another tool available to bean geneticists and breeders. The aim of this study was to investigate irregularities occurring during the cell cycle and meiosis in common bean. The common bean cultivar used was BRSMG Talismã, which owing to its high yield and grain quality is recommended for cultivation in Brazil. We classified the interphase nuclei, estimated the mitotic and meiotic index, grain pollen viability, and percentage of abnormalities in both processes. The mitotic index was 4.1%, the interphase nucleus was non-reticulated, and 19% of dividing somatic cells showed abnormal behavior. Meiosis also presented irregularities resulting in a meiotic index of 44.6%. Viability of pollen grains was 94.3%. These results indicate that the common bean cultivar BRSMG Talismã possesses repair mechanisms that compensate for changes by producing a large number of pollen grains. Another important strategy adopted by bean plants to ensure stability is the elimination of abnormal cells by apoptosis. As the common bean cultivar BRSMG Talismã is recommended for cultivation because of its good agronomic performance, it can be concluded that mitotic and meiotic irregularities have no negative influence on its grain quality and yield.
Appears in Collections:DBI - Artigos publicados em periódicos

Files in This Item:
There are no files associated with this item.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.